"It functioned by careful manipulation of water through a room full of interconnected pipes and pumps. The water level in various chambers (with precision to fractions of a millimeter) represented stored numbers, and the rate of flow between them represented mathematical operations. This machine was capable of solving inhomogeneous differential equations."
@tty many people have made things like full adders with marbles and such. May not be difficult to adapt the same principles to fluid through tubes.
Sunbeam City is a anticapitalist, antifascist solarpunk instance that is run collectively.